|Working with SAS Data Sets|
SAS/IML software provides the capability to create a new SAS data set from a matrix. You can use the CREATE and APPEND statements to create a SAS data set from a matrix, where the columns of the matrix become the data set variables and the rows of the matrix become the observations. Thus, an matrix produces a SAS data set with variables and observations. The CREATE statement opens the new SAS data set for both input and output, and the APPEND statement writes to (outputs to) the data set.